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flashcards > physics - motion > Flashcards

physics - motion Flashcards

1
Q

what is the definition for a scalar quantity

A

a quantity that only has a magnitude (size)

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2
Q

what is the definition for a vector quantity

A

a quantity that has both a magnitude and a direction

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3
Q

what is the definition for the displacement of an object

A

straight line distance and direction from the starting position

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4
Q

what is the definition for the displacement of an object

A

straight line distance and direction from the starting position

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5
Q

equation for speed

A

distance / time

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6
Q

definition for velocity

A

the speed and direction of an objects motion

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7
Q

definition for velocity

A

the speed and direction of an objects motion

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8
Q

what are the units for speed and velocity

A

metres per second

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9
Q

what is the equation for acceleration

A

change in velocity / time

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10
Q

what are the units used for acceleration

A

metres per second squared

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11
Q

are speed and distance examples of scalar or vector quantities

A

scalars

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12
Q

are velocity and displacement examples of scalar or vector quantities

A

vectors

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13
Q

what is a typical value for the walking speed of a person?

A

1.5 m/s

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14
Q

what is a typical value for the running speed of a person?

A

3 m/s

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15
Q

what is a typical value for the cycling speed of a person?

A

6 m/s

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16
Q

what is a typical value for the speed of sound in air ?

A

330 m/s

17
Q

what does a horizontal line on a distance - time graph represent?

A

stationary (not moving)

18
Q

what does a straight line on a distance - time graph represent?

A

constant speed

19
Q

what does a curved line on a distance - time graph represent?

A

acceleration (changing speed)

20
Q

what does a horizontal line on a velocity - time graph represent?

A

constant speed

21
Q

what does a straight line on a velocity - time graph represent?

A

constant acceleration

22
Q

what does a curved line on a velocity - time graph represent?

A

changing acceleration

flashcards (3 decks)

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